:root{
  --bg: #0f1724;
  --card: rgba(255,255,255,0.04);
  --muted: rgba(255,255,255,0.7);
  --accent: linear-gradient(90deg,#7c3aed,#06b6d4);
  --glass: rgba(255,255,255,0.03);
  --glass-strong: rgba(255,255,255,0.06);
  --radius: 14px;
  --gap: 1.25rem;
  --max-width: 1300px;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  color-scheme: dark;
}

/* Light mode override */
:root[data-theme="light"]{
  --bg: #f6f8fb;
  --card: rgba(10,12,18,0.03);
  --muted: #334155;
  --glass: rgba(10,12,18,0.03);
  color: #0b1220;
}

* {
  margin: 0;
  padding: 0;
  list-style: none;
  box-sizing:border-box;
}

html {
  scroll-behavior: smooth;
}

body{
  margin:0;
  background: radial-gradient(1000px 400px at 10% 10%, rgba(124,58,237,0.12), transparent),
              radial-gradient(800px 300px at 90% 90%, rgba(6,182,212,0.08), transparent),
              var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  display:flex;
  align-items:center;
  justify-content:center;
  padding: clamp(1rem, 3vw, 2rem);
  font-size:16px;
  line-height:1.5;
  min-height: 100dvh;
}

.site{
  position: relative;
  width:100%;
  max-width: var(--max-width);
  min-height: 90dvh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius: 18px;
  padding: clamp(1.25rem, 3.2vw, 2.2rem);
  box-shadow: 0 10px 30px rgba(2,6,23,0.6);
  backdrop-filter: blur(8px) saturate(1.05);
  border: 1px solid var(--glass-strong);
  overflow: hidden;
}

.btn{
  padding:.55rem .85rem;
  border-radius:10px;
  background:transparent;
  border:1px solid var(--glass);
  color:inherit;
  font-weight:600;
  font-size: 0.9em;
  cursor:pointer;
  display:inline-flex;
  gap:.6rem;
  align-items:center;
  transition: transform .18s ease, box-shadow .18s ease;
  backdrop-filter: blur(6px);
}

.btn:hover{ 
  transform: translateY(-3px) 
}

.primary{
  background: linear-gradient(90deg,#7c3aed,#06b6d4);
  color:white;
  border: none;
  box-shadow: 0 6px 22px rgba(7,12,20,0.55);
}



/* Responsive */
@media (max-width:1160px){
  body {
    align-items: flex-start;
  }
}
@media (max-width:560px){
  .features{ 
    grid-template-columns: 1fr; 
  }
}

/* small utilities */
.muted{ color:var(--muted) }
.small{ font-size:.85rem }
.glass-btn{
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border:1px solid var(--glass);
  padding:.45rem .6rem;border-radius:8px;font-weight:600;
}

/* subtle entrance animation */
.fade-up{ opacity:0; transform: translateY(10px); animation: fadeUp .7s ease forwards; }
.fade-up.delay-1{ animation-delay:.12s }
.fade-up.delay-2{ animation-delay:.22s }
.fade-up.delay-3{ animation-delay:.34s }
.fade-up.delay-4{ animation-delay:.46s }

@keyframes fadeUp {
  to{ opacity:1; transform: translateY(0) }
}